大约有 40,000 项符合查询结果（耗时：0.0256秒） [XML]
STL or Qt containers?
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edited Nov 10 '18 at 11:36
user10632420
answered Nov 3 '09 at 16:40
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How to remove the first character of string in PHP?
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tleb
3,44411 gold badge2020 silver badges3232 bronze badges
answered Jan 9 '11 at 9:55
Haim EvgiHaim Evgi
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Length of string in bash
...bytes len.\n" "${myvar}" $chrlen $bytlen
will render:
Généralités is 11 char len, but 14 bytes len.
you could even have a look at stored chars:
myvar='Généralités'
chrlen=${#myvar}
oLang=$LANG oLcAll=$LC_ALL
LANG=C LC_ALL=C
bytlen=${#myvar}
printf -v myreal "%q" "$myvar"
LANG=$oLang LC_A...
YYYY-MM-DD format date in shell script
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edited Jul 12 '19 at 11:53
flindeberg
4,38311 gold badge1919 silver badges3535 bronze badges
answer...
Does Foreign Key improve query performance?
...Edit
As the link now seems to be dead (kudos to Chris for noticing), following shows the gist of why foreign keys can improve (and hurt) performance.
Can Foreign key improve performance
Foreign key constraint improve performance at the time of reading
data but at the same time it slows down ...
C++ IDE for Linux? [closed]
... You also use tmux (previously also screen) to multiplex (= think multiple windows/tabs/panels) and persist your terminal session.
The point is that, thanks to the shell and a few tool writing conventions, these all integrate with each other. And that way the Linux shell is a truly integrated devel...
Redis command to get all available keys?
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answered Mar 9 '11 at 21:40
yojimbo87yojimbo87
57.1k2121 gold badges118118 silver badges128128 bronze badges
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What is the optimal algorithm for the game 2048?
... in action or read the source.
Currently, the program achieves about a 90% win rate running in javascript in the browser on my laptop given about 100 milliseconds of thinking time per move, so while not perfect (yet!) it performs pretty well.
Since the game is a discrete state space, perfect informa...
Any gotchas using unicode_literals in Python 2.6?
...x utf-8 encoded strings with unicode ones.
For example, consider the following scripts.
two.py
# encoding: utf-8
name = 'helló wörld from two'
one.py
# encoding: utf-8
from __future__ import unicode_literals
import two
name = 'helló wörld from one'
print name + two.name
The output of run...
C# HttpClient 4.5 multipart/form-data upload
...EST API. I don't like to comment for thanks, but thanks. It's portable for Windows Phone 8.
– Léon Pelletier
Jun 25 '13 at 8:50
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